Phenolphthalein CAS 77-09-8

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Chemical Name :Phenolphthalein

CAS: 77-09-8

Molecular Formula: C20H14O4

Molecular Weight:318.32

Item Specifications
Outer aspect White powder
Identification Positive
Color of solution A≤0.150
Acidity or alkalinity Pass
Melting temperature ≥260℃
Heavy metals ≤10ppm
Arsenic ≤8ppm
Chlorides ≤100ppm
Sulphates ≤200ppm
Loss on drying ≤0.5%
Sulphated ash (Residue on ignition) ≤0.1%
Limit of fluoran Pass
Related substance ≤0.5%
Chromatographic impurities ≤1.0%
Organic volatile impurity Pass
Assay 98.0%-101.0%

This product is a commonly used acid indicator with a color change range of pH 8.2 (colorless) -10.0 (red). Non-aqueous titration indicator, chromatographic analysis reagent

Phenolphthalein is also a medicine, as a laxative, it acts on the colon and is used to treat constipation.

25kg/drum or as customer requirement
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